The fatality at the Irkutsk Research Anti-Plague Institute has drawn international attention amid conflicting statements from Russian officials. Governor Alexey Tsydenov initially posted on social media that a woman had died "from the plague" but later edited his post to say "possibly."
Russia's consumer protection watchdog, Rospotrebnadzor, confirmed the woman was diagnosed with pneumonia of unknown etiology and said tests found no pathogens linked to her work, denying any laboratory accident. However, local media reported unverified claims that she contracted pneumonic plague after breaking a test tube.
Kremlin spokesman Dmitry Peskov urged the public not to listen to "rumours or speculation," while reports emerged that around 200 potential contacts had been identified and parts of a local hospital were closed for quarantine.
US Secretary of State Marco Rubio told reporters on Monday that officials were "watching and monitoring" the situation "closely," adding: "I don't think it's cause for alarm, but it is cause for focus." The World Health Organisation confirmed it is in contact with Russian authorities and said the public health risk appears low, though it would update its assessment as more information becomes available. The European Commission also said it was monitoring the case "very closely."
Professor Jennifer Nuzzo, director of the pandemic centre at Brown University's school of public health, described the situation as "concerning" and noted that the authorities' response increased worries that this is not a routine laboratory incident.